Portable water-heater



T. l. DOWD.

PORTABLE WATER HEATER APPLxcATloN man ocT.31,1919.

Patented Mar. 15, 1921.

2 SHEETS-SHEET l.

a of o c NDERIS PETERS. lNC.. LITHCI.. WASHINGTON. D. C

I. DOWD.

PORTABLE WATER HEATER.

APPLICATION FILED OCT. SI. 1919.

Patented Mr. 15,1921.

2 SHEETS-SHEET 2.

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NORHIS PETERS. INC.. L ITHO.. WASHINGTN. D. C.

i Unirse stares rarer ePrice.

THOMAS J'. DOWD, OF NEW YORK, Y.

ronrarrnl waren-HEATER.

Vnaviera.

Specification of Letters Patent. Pateitd 'hIitlh 15, 1921.

Application .filed October' 31, 1919. Serial No. 334,791.

T 0 u?? whom it may concern Be it known that I, THoMAs J. Down, a citizen of the United States, residing at Bronx, New York city, and Statel of New York, have invented certain new and useful improvements in Portable Water-Heaters; and I do hereby declare the following t0 be a full, clear, and exact description of the invention, such as will enable othersVv bath tub or tank and which is of such con-1 struction as to permit the water to circulate through the heater to thoroughly heat the entire contents of the tub or tank.

further object of the invention resides in the provision of a portable heater which includes a casing having a suitable burner mounted therein adapted to be connected with the usual house suppl;T or any other fuel supply, and-which includes ducts for supplying oxygen to the burner that serve to brace or lend rigidity to the casing.

Still another object of my invention is to provide a portable water heater used in conjunction with bath tubs and which when supported in the tub cannot be readily knocked over hy the force of the water flowing in the tub.

.another object of my invention is to provide a heater of this type wherein the heater is disposed centrally of a plurality of air ducts so that the products of combustion when passing out of the heater will cause a downdraft through the ducts to supply a maximum quantity of fresh air.

Another object of the invention resides in the provision of an improved heater coil which is so constructed as to permit any one of the tubes thereof to be removed for repairs or cleaning, the heating coil being of such construction as to present a relatively great heating surface and yet is compact.

l/Vith the above and otherobjects and advantages in lview which will become apparent from the following description taken in connection with the accompanying draw-y *ings7 the invention consists in the novel combination of elements, construction andarrangement of parts, operations' and specific features all of which are to be hereinafter enlarged upon and recited in the subjoined claims. A

En the clqrawings:V I n Figure l is. an elevation of Yafportable heater. constructed in accordancewith my invention and supported in operativel position in a .bath tub and'partly submerged in water contained in the tub;

l `ig. 2 is a vertical longitudinal Sectional view of the heater; t

Fig. 3 1s a fragmentary. perspective view of the heater and illustratingthe upper ends of the air ducts for supplying air to the burner Figzt is a transverse sectional view taken on line fl-4 of Fig. 2;

yFig. 5 is a vertical sectional view of the heating coil; and y Fig. 6 is a fragmentary perspectiverview of the heating coil.

Referring te the drawings in detail wherein like characters of reference denote like parts throughout the several views, the numeralg 'designates the bath tub Vwhich is shown for the purposeofillustrating the application of my device. VvMy portable water heater which is used preferably for heating water in a bathtub but may be used equally well for heating water contained in other tanks includes a rectangular casing 10 which is formed with a bottom wall lland is open at the top. A water heater coil is mounted centrally within the casing at a point below the water line of the water contained in the bath tub or other receptacle and includes the main feed pipe 12 having voneV end open and is disposed in an inlet opening 12 formed in one vside of the casing. Extending laterally from the pipe 12 is a series of horizontally disposed tubesr 13 from which extendA vertically disposed. couplings 14. I provide a series of rows of thehorizontal `tubes 13, each of'which carries one of the couplings '14, and which couplings are so arranged as ioo A burner i8 is disposed `beneath the heatl ing coil to heat tliewatei circulating' through the latter. The `fuel supply pipe ot this burner `1S extends `through an opening' in tlieisideotthe casing' adjacentv the bottoni `and is provided witlia valve 19. i The usual `tube 2O communicates with the iras jet or 4other fuelv supplyand is connested with tlie burner as illustrated in Fig'. l.

Disposed within the corners ail'oi'ded by the ineetiiip;` `edggesoi the walls forming' the` 20 casing, is a plurality oli-vertically' disposed "an: ducts 2i which extend to a point in close proximity to the burner to supply `fresh air tliei'eto. The upper ends of these :ducts extend aboretlie upper end oi the cas- `25. ing. These tubes are closedfat tlietop and ,aifecut away as indicated at so aste effect a downdi'at thi'oupglithe .ducts to sup .portithecombustion of the fuel.`

These ducts 22 are rectangular in cross A3.0 ,section and lit Within the angles afforded by the joining,- of the walls ot the casingand ,strengthen or brace the walls and thereby lend rigidity to the structure in general. In the use ot the heater itis supported in f3.5 a Vertical position on the bottoni o'f :the tub, i

I`the level` of the water in tlie tub beiner below the upper edge of the casing'. i lt will be obvious tliat the water contained inthe tub ,willpass'tlirouglitlie inlet Aopening l2 and gio circulate tlii'ougliutlie various pipes and heated during itsl passagetherethrough and discharged throughtlie discharge opening` 17. In this manner the entire contents oit modification are the tub will'be heated to the desired ten perature.

The construction illustrated and described is a practical.embodiment of the inrtubes being' openat their tops and adjacent the .burner to serve as draft ineans.

9i, A portable water heater having` a cas` ing, va heating coil wfitlii'n `the casing;7 a he atei.` for the coil. tubes at the corners of the easing to brace vthe wallsthereo said tubes extending' above the casing` and thereHV at being out away to .provide air inletsV and .finger grips, and said tube haring;- air outlets adjaceiit the burner.

3. A portable water heater haiiiiofa cas-v ingr for disposition in the water. a water c ir- -f ciilatin:r coil witliinftlie casino havin@ thev LU N lv inlet end below the outlet end and both ends inonnted'in tlie'wall oit the casing and supporting'the coil therein, a burner for thev vvcoil within the casing' having; a fuel supply connection Aexterio'il)T l oit the casing, tubes in the .corners ot the Casingfto reinforce the walls thereof, said tubes eXtendinrg above the casing; and there being' out away to provide In testimony whereof l ai" my signature kin' presence ot two witnesses.

THOMAS J. DOND. Y

air inlets and finger grips, and said tubes having' air outlets adjacent the burner. 

